🚀 Py.Amsterdam Reloaded – We’re Back! 🎉

The Python community in Amsterdam is officially back! We’re kicking off with a special event at Optiver, the very place where Py.Amsterdam’s first-ever meetup happened in March 2019. 🎂🎊 We’re excited to return and truly appreciate their support!
🔹 Agenda:

• 18:30 | 🏢 Doors open
• 19:00 | 🎤 Choosing Between Free Threading and Async | Samet Yaslan
• 19:45 | 🍕 Networking (drinks & food)
• 20:30 | ⚡ Lightning talks
• 20:45 | 🔥 PydanticAI & Logfire | Marcelo Trylesinski

PydanticAI & Logfire
In this talk, we're going to walk through the basics of PydanticAI, and integrate it with Logifre. We'll see how we can run our agents, and make sure we monitor our application properly.

Marcelo maintains Starlette & Uvicorn on his free time, and he is currently working at Pydantic - focusing on PydanticAI.

Choosing Between Free Threading and Async
With the removal of the GIL, is async still necessary in Python? Python 3.13 introduces PEP 703, which eliminates the GIL, allowing true multi-threading and parallel execution across CPU cores. In this talk, we’ll explore how this change impacts the choice between threading and async programming. We'll compare their strengths and weaknesses, exploring when to use each—whether for CPU-bound tasks with threads or I/O-bound operations with async. By the end, you'll gain a clear perspective on which model best suits your needs, helping you make more informed and efficient decisions in your Python projects.

Samet has been chairing the Python Standards Group at Optiver since 2021, with the mission of standardizing Python codebases by making best practices known to everyone in the company. He advocates for clean, simple, and well-tested code. He has earned his living using Python for more than 10 years and began participating in the open-source CPython project last year. He continues to contribute with new pull requests occasionally and really enjoys the opportunity to give back!

🏢 Want to host a future meetup?
Py.Amsterdam is a community-driven event, and we are now planning meetups every other month. If your company is interested in hosting, apply here 👉 Host a meetup
🔗 More info on our website: py.amsterdam
📢 Join our Meetup group:[ meetup.com/pyamsterdam](https://www.meetup.com/pyamsterdam/)
See you on March 27th for an evening with your favourite community ! 🚀🐍

## About our sponsor

Optiver is a global market maker

As one of the oldest market making firms in the world, Optiver has been improving financial markets since 1986. By providing liquidity to markets across the globe, we make them more efficient, transparent and stable.

Powered by technological innovation, we continuously provide competitive, two-sided prices for thousands of financial instruments on all major exchanges globally.
Our world class teams of highly skilled professionals come from a broad range of disciplines but are bound by one simple purpose: improving the market.